EP 1671522 A2 20060621 - DIMMING CONTROL TECHNIQUES USING SELF-EXCITED GATE CIRCUITS
Title (en)
DIMMING CONTROL TECHNIQUES USING SELF-EXCITED GATE CIRCUITS
Title (de)
DIMMER-STEUERTECHNIKEN DURCH VERWENDUNG SELBSTERREGTER GATE-SCHALTUNGEN
Title (fr)
TECHNIQUES DE COMMANDE D'INTENSIT CLAIRAGE METTANT EN OEUVRE DES CIRCUITS GRILLES D'EXCITATION AUTONOME
Publication
Application
Priority
- CN 2004001074 W 20040922
- US 66757103 A 20030922
Abstract (en)
[origin: US2005062439A1] There is described methods and techniques for providing dimming control of low-cost fluorescent lamps that are driven by self-excited gate circuits and which are nominally non-dimmable. A dimming function is achieved by providing a variable DC voltage input to the ballast. It is possible to retroactively change existing non-dimmable lamps into dimmable lamps, or to form new low-cost dimmable fluorescent lamps.
IPC 1-7
IPC 8 full level
H05B 41/282 (2006.01); H05B 41/392 (2006.01)
CPC (source: EP US)
H05B 41/282 (2013.01 - EP US); H05B 41/2825 (2013.01 - EP US); H05B 41/2827 (2013.01 - EP US); H05B 41/391 (2013.01 - EP US); H05B 41/3921 (2013.01 - EP US); H05B 41/3927 (2013.01 - EP US); Y02B 20/00 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2005062439 A1 20050324; CN 1883236 A 20061220; EP 1671522 A2 20060621; EP 1671522 A4 20080903; US 2006017401 A1 20060126; WO 2005029919 A2 20050331; WO 2005029919 A3 20050519
DOCDB simple family (application)
US 66757103 A 20030922; CN 2004001074 W 20040922; CN 200480033884 A 20040922; EP 04762207 A 20040922; US 22121804 A 20040922